Draft-regulator for heating-furnaces.



A T. OLIVER.

DRAFT REGULATOR FOR H EATING FURNAQES. APPLICATION FILED MAY 13. 1913.

1,152,751. PatentedSept. 7, 1915;

2 SHEETS-SHEET 1.

WITNESSES [1V [{EMT 01? 8.114111% I A I I A. T. OLIVER. DRAFT REGULATORFOR HEATING FURNACES.

APPLICATION FILED MAY 13, I913.

2 SHEETS-SHEET 2.

WITNESSES X1344. my.

Patented Sept. 7, 1915.

ABRAHAM 'I. OLIVER, OF TAMAQUA, PENNSYLVANIA.

DRAFT-REGULATOR FOR HEATING-FURNACES.

Specification of Letters Patent.

Patented Sept. *7, 1915,

Application filed May 13, 1913. Serial No. 767,466.

To all whom/25 may concern:

Be it known that I, ABRAHAM T. OLIVER, citizen of the United States,residing at Tamaqua, in the county of Schuylkill and State ofPennsylvania, have invented certain new and useful Improvements inDraft- Regulators for Heating-Furnaces, of which the following is aspecification.

This invention relates to time controlled draft regulators for heatingfurnaces and pertains especially to mechanism for closing the fuelchamber door and opening the draft door or damper of a furnacesimultaneously, and at a predetermined time.

The prime object of this invention is to provide a device of suchconstruction that its operation to open and close the damper and doorrespectively, of the furnace will be certain, unfailing and without lostmotion in itself or in the opening and closing of the damper and door.

A further object of the invention is to provide a novel device connectedto the fuel chamber and to the draft door of a furnace and operated by atime set clock, and com prising a simplified and inexpensive arrangementof elements adapted to be quickly and expeditiously set for releasing aweighted lever to open the fuel door and close the draft doorsimultaneously, or vice versa. 7

A still further object of the invention is to provide practical meansaffording facilities for mounting thereon the operating mechanism of thedevice and for holding a clock or time piece thereon and to furnish aspecial connection between the time piece and such mechanism foroperating the latter.

With the above and other objects in view, my invention relates to suchdetails of construction, combination and arrangement of parts as will behereinafter more fully described and specifically pointed out in theappended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views and in which;

Figure 1, is a front elevation of the fur-- nace showing an ordinaryalarm clock as means for actuating the operating mechanism, Fig. 2, is arear elevation of an ordinary alarm clock showing the same inconjunction with suitable triggers for releasing the operating mechanismatcertain predetermined periods. Fig. 3, is a detail view of the triggermechanism, and,/Fig. 4, is a fragmentary View of a portion of thefurnace showing mechanism having attachment to the fuel door.

In the accompanying drawings wherein is shown the preferred embodimentof my invention, the numeral 10 designates the body portion of anordinary heating furnace illustrating a heat conducting pipe 11 ashaving connection therewith for the purpose of distributing heatthroughout the different radiators Within the building. Fuel and draftdoors 12 and 13 respectively have hinged connection as shown at 1% and15, to the adjacent portions of the furnace and serve the usual purpose.A heat outlet door 16 is also shown in pivotal engagement with the heatpipe 11, and serves to eliminate the creating of a draft when in anopened position.

Consistent with the above, I have provided improved mechanism foractuating the doors 12, 13 and 16 simultaneously in order to regulatethe draft within the furnace. I preferably use, for actuating suchmechanism, a clock or time piece of suitable nature, such as willrelease the doors at a predetermined period without any attentionwhatsoever on the part of the owner.

Vith the above in view, a support 17 is arranged adjacent the furnace,the same carrying an angle bracket 18 which is secured thereto as shownat 19. The clock or time piece used for releasing the device ispreferably carried on the bracket and disposed in close proximity to thetrigger elements in order to assure e'lficient operation. In providingthe trigger elements, an upstanding standard 20 is provided upon thebracket, the latter carrying oppositely arranged levers '21 and 21, thelatter of which is slotted as at 22 in order that it may receive theforward extremity of the former in the manner illustrated in Fig. 8.Suitable cable mechanism is arranged in connection with the doorelements and the trigger elements whereby actuation of the latter willrelease the doors and allow the same to assume predetermined positions.In providing such mechanism for operating the doors simultaneously, acable 23 is provided, one end thereof having connection as at 24c to thedraft door 18 of the furnace, the same traveling about pulleys and 26 asillusabout pulleys 30 and 31 and is finally con-' nected to the door 16as at 32. Therefore .from the above, it is apparent that when the draftdoor is in a closed position, the door 16 will be opened or vice versa.A third cable is employed which has connection with the weighted end ofthe lever 27, extends about a pulley 33 and carries an eyelet 34: on itsother extremity as, illustrated in Fig. 2; In order to limit themovement of the eyelet, the latter has connectionwith a cable strand 35which is secured to the support 17 as at 36. When the doors are set inthe position illustrated in Fig. 1, the eyelet 22 is disposed over thelever 21, as is clearly shown in Fig. 3 of the drawings, thus holdingthe weighted end of the lever 27 in an upper position.

Still another cable 37 has connection with the last mentioned cablebetween the pulley 33 and the weighted end of the lever 27,

the other end thereof extending about the pulleys 38 and 39 and carryinga fastening member 40 for engagement with lugs ll on the fuel door 12 ofthe furnace.

Here particular attention is called to the particular construction ofthe latch or securing member 40. This afiords facilities for attainingthe attachment of the cable 37 p I to the door yet allows a quickdetachment thereof when desired to admit fuel into the furnace.

From the above, it will be recognized that the doors 12 and 16 are heldopened or closed together at the same time while the door 13 is alwaysopposite thereto. "When the doors 12 and 16 are open and the door 13closed, all draft is eliminated in the furnace consequently the firewill not burn as quickly as would be the case if the door 13 were openedand the doors 12 and 16 closed. At night, the fire within the furnace isallowed to die down somewhat and this is effected by closing the draftdoor 13 and allowing the doors 12 and 16 to-remain open. In conjunctionwith the mechanism mentioned, I have provided time control means forallowing the doors. l2 and 16 to close and the draft to open at apredetermined time, consequently allowing the Gopies of this patent maybe obtained for a closed position.

and alarm mechanism actuating handle 14:.

The handle 44. is, as is well known, employed for winding thespring'which actuates the alarm mechanism of the clock andwhen the,alarm rings this key or handle t will travel -in the directionindicatedby the arrow 4 1.

When the clock is disposed as is shown in the drawings the handle 44,will, during the ringing of the alarm, engage the end of the lever 21and force the same off the end of the lever 20, thus releasing theweighted lever 27. This'releasing of the lever 27 will cause the same torock and open the draft door of the furnace throughthe medium of thecable 23. When this operation takes place, all pressure is released fromthe cable 29 whereby the'door 16 is allowed tomo-ve into At the sametime the weighted lever 27 will draw the cable 37 to effect, thepositiveclosing of the door 12 i as is apparent. V q Gther advantagesresultant from the use of my invention will be readily comprehended bythose employed in this art.-

Having thus fully described my invention, 7

what 1 claim as new and desire to secure by Letters Patent isas'follows: Y

The combination witha heating element having draft'doors therein, of adraft regulator, said regulator comprising a bracket, a standardsupported upon the bracket, an

arm piv'otally connected to thestandard and having an elongated eye inthe free end thereof, a second arm pivotally connected to the standardand adapted to pass through the eye in the first mentioned arm, aweighted lever pivotally supported above the standard, a cable connectedat one end to the weighted lever and the opposite endprovided with aneye adapted to engage the five cents each, by addressing theCommissioner of Patents.

Washington, D. G.

